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Xinyuan-LilyGO / LilyGO-T-Motion

LilyGO-T-Motion
https://www.aliexpress.com/item/4000571051141.html?aff_platform=link-c-tool&cpt=1578107976594&sk=mXuHXFTw&aff_trace_key=80e684f1cbe34a1bb0ec8956f636c773-1578107976594-01825-mXuHXFTw&terminal_id=cfe3515ff7a94caaa94763231e04bed6
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low level of GNSS reception on 20200110 T-Motion #1

Closed NOWherers closed 4 years ago

NOWherers commented 4 years ago

I have two boards branded with T-Motion 20200110. One of them uses the built-in gnss antenna and the other one uses an antenna from a T-Beam board.

I wrote a sketch to pass the gnss messages directly to the com port to use the ublox u-center software to see whats going on with the gnss receiver.

unfortunately i get barely any signals, just 3-15db and just for a few seconds from one sattelite and ocaisonally from two sattelites for a few seconds. I have several gnss receivers and have no problem to receive multiple sattelites with them...sometimes it takes a few minutes but the behaiviour doesnt change with the acsip s76g/sony cxd5603 even after hours.

Is there a Problem in the revision of the board? Any ideas?

PetrJoch commented 4 years ago

I have same issue. I confirmed boar revision Issue. Board is defective. Serious problem with gnss receiver acsip s76g/sony cxd5603 never sent GPS possition even after hours.

lewisxhe commented 4 years ago

The front-end time has been restored to normal due to problems with the purchased raw materials. If you have any questions, you can contact the sales customer service for after-sales processing.